Lung puncture is a minimally invasive surgical operation, which is usually relatively safe, and its precautions include close observation of vital signs, attention to rest, timely review, dietary modifications, etc. 1. Closely observe vital signs: blood pressure, pulse and respiration should be closely observed after lung puncture. 2. Pay attention to rest: after lung puncture, rest in bed for about 30 minutes to avoid bleeding at the puncture site, and avoid heavy labor for one week after the operation to prevent pneumothorax. 3. Timely review: Observe whether there is chest pain or blood in sputum, and conduct regular chest CT or X-ray review to observe whether there is pneumothorax, hemothorax and so on, so as to deal with them in time. 4. Dietary adjustments: you should eat a light diet after lung puncture, avoid smoking, drinking and eating spicy and stimulating food to promote the recovery of the body. Lung puncture is generally safe. When discomfort occurs after puncture, consult your doctor in time and be treated accordingly.